Controlled release dosage forms using acrylic polymer, and process for making
First Claim
Patent Images
1. A process of preparing a controlled release oral dosage form comprising:
- (a) mixing an active pharmaceutical ingredient and an acrylic polymer to yield a mixture;
(b) forming said mixture into a solid unit dosage form, and (c) curing said solid unit dosage form.
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Abstract
Process for dry mixing a controlled release oral dosage form are provided. The dosage form is produced by mixing, tableting, and curing dosage forms. The cured dosage forms exhibit controlled release properties superior to those of uncured tablets.
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Citations
15 Claims
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1. A process of preparing a controlled release oral dosage form comprising:
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(a) mixing an active pharmaceutical ingredient and an acrylic polymer to yield a mixture;
(b) forming said mixture into a solid unit dosage form, and (c) curing said solid unit dosage form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A process of preparing a controlled release oral dosage form comprising:
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(a) mixing oxycodone and ammonio methacrylate copolymer to yield a mixture;
(b) forming said mixture into a tablet using dry granulation or direct compression; and
(c) curing said tablet for a time and at a temperature sufficient such that a DSC scan will produce no significant peaks in the region of from about 40°
C. to about 70°
C.
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10. A controlled release oral dosage form produced according to the process comprising:
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(a) dry mixing ant active pharmaceutical ingredient and an acrylic polymer to yield a mixture;
(b) forming said mixture into a solid unit dosage form; and
(c) curing said solid unit dosage form.
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11. A controlled release oral dosage form produced according to the process comprising:
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(a) dry mixing oxycodone hydrochloride and ammonio metacrylate copolymer to yield a mixture;
(b) forming said mixture into a tablet using dry granulation or direct compression; and
(c) curing said tablet at a temperature between about 40°
C. and about 70°
C.
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- 12. A controlled release oral dosage form comprising an active ingredient dispersed in a sustained release matrix comprising an acrylic polymer, wherein said dosage form has been cured.
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15. A controlled release oral dosage form comprising an active pharmaceutical ingredient and a substantially uniform matrix which comprises from about 30% to about 70% of a cured ammonio methacrylate copolymer.
Specification